Looks like after every major update to Windows 10, the logo reappears.

I have upgraded from Windows 10 build 1607 to Windows 10 build 1703 and GlidosID has changed again. I have already generated two GlidosID for the same computer and looks like I'm going to generate 3rd key for 3rd Glidos ID. This is used on the absolutely the same hardware, so only Windows has been upgraded via standard Windows updates.

This is from Glidos web site: "You are allocated only a small number of unlocks which is incremented at regular time intervals. Don't waste them."

Looks like I'm really wasting my Glidos unlocks for each Windows upgrade on the same hardware.